It seems to me that many churches that claim to believe in this don't practice it. If we really did in church what the scriptures command then we would follow this, 'every one of you hath a psalm, hath a doctrine, hath a tongue, hath a revelation, hath an interpretation. Let all things be done unto edifying.'
We actually have 'commandments of the Lord' for church meetings that regulate speaking in tongues and interpretation and prophesying. The speakers are the membes of the congregation.
Why is it that 'regulative principle' discussions are on such things as what hymns to be sung congregationally in church, whether only psalters are appropriate, and issues related to the sermon? The actual passage that gives instructions on what do do in church has 'every one of you', not just 'the pastor' potentially offering a 'doctrine'-- not one long sermon.
I suppose we could take a regulative approach to the actual New Testament passages on how to have church, instead of ignoring it, assuming a one-sermon, clergy centered format, and then trying to argue from the Old Testament as to which version of our man-made idea of a church service is more Biblical.